i'll probably only be going to the one on the 15th. is there much variation in the vendors from week to week?

There will be a little variation, but not a ton. I believe most people are signed up to be there all three weeks. Check out the vendor list on the site and they should say on their websites/twitters when they will be there. Cinnamon Snail will be there all three weeks for sure, so you'll be able to get a pumpkin white chocolate donut no matter what!

_________________I am not a troll. I am TELLING YOU THE ******GOD'S TRUTH****** AND YOU JUST DON'T WANT THE HEAR IT DO YOU?